Most Helpful Girl
With whatever way, @Dave24, that you Decide to tell her, whether it is face to face, or even on the phone, Make sure you let her down easy so you will Not hurt her to the point where she Feels it is All her fault That... I kindly dump her.
Explain to her that you feel that you are Not ready for Anything heavy nor steady and that with 'Seeing a girl for a few weeks now,' you realize you don't want this to go any further and you think it best that you are this Honest John with her.
If she cries the blues and mentions the Sex, tell her with a light and sweet tone that it had Nothing to do with That, it's just You that 'Really don't want' Anything but being friends.
Good luck. xx
Most Helpful Guy
So here's a thing, the only reason you want to be nice is for your own selfish sake. You don't want to feel "mean".
If you do it rough and abrupt, you are mean in the short run but she will get on with her life faster and it is better in the long run for her mental well being, though you will never see that.
If you do it sweetly and over a period of time, you are nice in the short run and you will feel good, but she will get hung up on you and it will waste a lot of her time when she could be finding the man of her dreams. You'll never see the lasting negative impact you have on her life, but at least you'll keep your mind all happy.
You're either a villain now and a hero later, or a hero now and a villain later.
Be a villain for her sake or a hero for your own.